Author: liuxipu

LogMAR chart From Wikipedia, the free encyclopedia A LogMAR chart or Bailey-Lovie chart [1] or ETDRS chart (Early Treatment Diabetic Retinopathy Study) [2] comprises rows of letters and is used by ophthalmologists, optometrists and vision scientists to estimate visual acuity. This chart was developed at the National Vision Research Institute of Australia in 1976, and is designed to enable a more accurate estimate of acuity than do other charts (e.g., the Snellen chart).[3] For…

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